Teaching Models in Population Genetics
| Autor: | H. E. Schaffer, L. E. Mettler |
|---|---|
| Rok vydání: | 1970 |
| Předmět: | |
| Zdroj: | BioScience. 20:1304-1310 |
| ISSN: | 1525-3244 0006-3568 |
| DOI: | 10.2307/1295367 |
| Popis: | An alternative way of locating these equilibrium points is to specify that the three distances (genotypic frequencies) are to satisfy the relationship f(Aa)2 = 4 x f(AA) x f(aa). [The frequency of AA is denoted by f(AA), etc.] Those populations which are not in H-W equilibrium are represented by points falling elsewhere than on the curve. They will be restored to H-W state (in a maximum of two generations) once the conditions for equilibrium are satisfied. Only one generation is needed if the gene frequencies in the two sexes are equal. The conditions for H-W equilibrium imply that gene frequencies remain constant, and so this change toward equilibrium cannot involve a change in gene frequencies. All those sets of genotypic frequencies which represent populations with the same gene frequencies lie on a vertical line. Thus, all those populations represented by the points on the vertical line in Figure 1 will go to the equilibrium point E. The gene frequencies for all |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|